Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-100
Samsung Electronics
 Code
H2-4502
 Error message
Paper jam at mailbox bin 4. Remove paper
 Symptom / Cause
Initialization started with Jammed paper covering Mailbox Bin4 Exit Sensor.
Paper exists covering Mailbox Exit Sensor. Or Mailbox Exit Sensor Damaged or harness connection not well. Or
Mailbox Main Board damaged.
 Troubleshooting method
1. Check if there is a jammed paper on the feeding
path of Mailbox.
2. Check Mailbox Main Board Harness connection.
3. Check Mailbox Bin4 Exit-related sensors’
operation & harness connection.
4. If the same problem happens after checking 1~3,
replace the mailbox main board.
5. If the same problem happens after checking 4,
replace the mailbox harnesses.